1005. Using On-Screen Menu Menu Descriptions & Functions [SETUP][BASIC]Correcting Vertical Keystone Distortion Manually [KEYSTONE]You can correct vertical distortion manually. (→ page 22)TIP: When this option is highlighted, pressing the ENTER button will display its slide bar for adjustment.Selecting Cornerstone Mode [CORNERSTONE]This option allows you to correct trapezoidal distortion.Selecting this item will display the Cornerstone adjustment screen. (→ page 32)NOTE: The [CORNERSTONE] item is not available when [KEYSTONE] or [GEOMETRIC CORRECTION] is selected.Using the PIP/PICTURE BY PICTURE Function [PIP/PICTURE BY PICTURE]This function allows you to view two different signals simultaneously. (→ page 35)MODE:This option allows you to select two modes: PIP and PICTURE BY PICTURE.PIP: This option allows you to view a sub picture in the main picture.PICTURE BY PICTURE: This allows you to view two pictures side by side.POSITION:When [PIP] is selected for [MODE], this option allows you to select the position of a sub picture in the main pic-ture.The options are: TOP-LEFT, TOP-RIGHT, BOTTOM LEFT, and BOTTOM RIGHT.NOTE: The [POSITION] cannot be selected when [PICTURE BY PICTURE] is selected.